Using the first representation theorem (Theorem 2.1 [1]}) we have a one-to-one correspondence between m-sectorial operators and closed sectorial sesquilinear forms i.e. \(\tilde{W}=T_{t}\)  by symbol, where \(t\)  is a sesquilinear form corresponding to the operator \(\tilde{W}.\)  Hence \(H:=Re\, \tilde{W}\)  is defined (see [1]}). In accordance with Theorem 2.6 [1]} the operator \(H\)  is selfadjoint, strictly accretive.
